The data centers look like shipping containers, with Microsoft's logo on them.
They are transported on the road by trailer. This one is already in use in Redmond, Washington on the Microsoft Campus. Others are in the early stages with defense contractors and some private sector companies.
Microsoft renderings show some potential use cases for the data centers.
In this case, the portable unit would be a field Datacenter during humanitarian relief missions.
The data centers will be important in places where networks are frequently disrupted, or not available at all. When the network connection isn't possible, they will connect to backup satellite connections.
SpaceX Starlink will provide the high-speed satellites for the project.
Microsoft designed the unit to work in a range of climates and conditions, even if they are generally inhospitable. They will be equipped to block radio frequency interference and work in most temperatures and humidity levels.
Microsoft has some experience creating data centers under unusual conditions.
In 2018, Microsoft sunk an underwater data center off the coast of Scotland in an ambitious experiment. This summer, they retrieved it and found it was eight times more reliable than land-based data centers.